JP2009152907A - Incoming call transfer method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an incoming call transfer method for charging a telephone call fee from an incoming origin to a transfer destination to an originator. <P>SOLUTION: Each exchange 20 stores a transfer destination number for each incoming destination number, stores fee information required for calculation of the telephone call fee for each telephone number for charge, when receiving the incoming destination number from a telephone set 13 of the originator, an exchange 20 of an originator transmits an incoming request including an incoming destination number and an originator number to an exchange 20 which stores a telephone set 13 of the incoming destination number, when receiving the incoming request, an exchange 20 of the incoming destination transfers, if the incoming destination number included in the incoming request is stored in a transfer information storage means 25 in the self-exchange 20, the incoming call to the exchange 20 which stores the telephone set 13 corresponding to the transfer destination number made to correspond to the incoming call destination number, the exchange 20 of the originator and the exchange 20 of the incoming destination transmit the fee information of a call via the self-exchange 20 to a charging processor 12 when the call is terminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for transferring an incoming call to a telephone number of a forwarding destination that is set in advance in association with the telephone number of the called party when the incoming call is received at a preset telephone number.

  An incoming call transfer service is known in which when an incoming call is received at a preset telephone number, the incoming call is transferred to a preset destination telephone number in association with the destination telephone number ( For example, refer nonpatent literature 1).

NTT East / NTT West, "NTT FLET's contact: Telephone additional service: Voice Warp", [online], [Search March 30, 2007], Internet <URL: http://www.ntt-flets.jp/add /vw.html>

  In the above call transfer service, the call charge from the caller to the caller is charged to the caller, but the call charge from the caller to the callee is the caller of the transferer, that is, the subscriber who applied for the call transfer service. Will be charged. Therefore, even for calls that are unnecessary for subscribers who apply for call forwarding services such as mischievous calls, solicitations, and sales, the call charges from the forwarding source to the forwarding destination are charged to the subscriber, and the incoming calls are forwarded. Service convenience may be reduced.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to enable a caller to charge a call charge from a transfer source to a transfer destination in an incoming call transfer service.

  In order to solve the above-mentioned problem, for example, in the first aspect of the present invention, in a telephone system including a plurality of exchanges, when an incoming call is received at a destination number which is a preset destination telephone number. An incoming call transfer method for transferring an incoming call to a forwarding destination number that is a telephone number of a forwarding destination set in advance in association with the destination number, and each exchange is associated with the destination number. Transfer information storage means for storing a transfer destination number; and charge information storage means for storing charge information, which is information necessary for calculating a call charge, in association with a telephone number of a user who charges the call charge. And the exchange that accommodates the caller's phone, when receiving the callee number from the caller's phone, receives an incoming call request including the callee number and the caller's phone number that is the phone number of the caller's phone, The arrival When the exchange that accommodates the telephone with the destination number included in the request is received and receives the incoming request, the destination number included in the incoming request is received. Is stored in the transfer information storage means in the local exchange, the incoming call is sent to the exchange accommodating the telephone corresponding to the transfer destination number stored in the transfer information storage means in association with the destination number. The exchange that accommodates the caller's telephone and the exchange that accommodates the callee's telephone each receive the charge information necessary for calculating the charge for the call when the call through the local exchange ends. It is stored in the charge information storage means in the local exchange in association with the telephone number of the caller telephone, and the charge information in the charge information storage means is shared with the telephone number of the associated caller telephone. Provides a call transfer method characterized by transmitting to the billing apparatus for performing accounting processing of the call charge.

  Further, according to the second aspect of the present invention, in a telephone system including a plurality of exchanges, when a call is received at a callee number that is a preset callee phone number, the call is associated with the callee number. Transfer method in which the incoming call is transferred to a transfer destination number that is a preset transfer destination telephone number, and each exchange stores a transfer destination number in association with the call destination number. The exchange having the information storage means and accommodating the caller telephone, when receiving the callee number from the caller telephone, includes the callee number that is the callee number and the telephone number of the caller telephone. The incoming call request is transmitted to the exchange that accommodates the telephone of the destination number included in the incoming call request, and the exchange that accommodates the incoming telephone is included in the incoming call request when the incoming call request is received. Please If the incoming call destination number is stored in the transfer information storage means in the local exchange, the transfer destination number stored in the transfer information storage means in association with the incoming call destination number and the received incoming call request When the transfer request including the included caller number is transmitted to the exchange that accommodates the caller's telephone, and the exchange that accommodates the caller's telephone receives a transfer request from another exchange, the transfer request Recreate the incoming request with the source number and forwarding number included in the source number as the source number and destination number, respectively, and recreate the incoming request as the destination number contained in the incoming request. Provided is a call transfer method characterized by transmitting to a switchboard in which a telephone is accommodated.

  According to the exchange of the present invention, in the call transfer service, the call charge from the transfer source to the transfer destination can be charged to the caller.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a system configuration diagram showing a configuration of a telephone system 10 according to an embodiment of the present invention. The telephone system 10 includes a charging processing device 12 and a plurality of exchanges 20. The accounting processor 12 and the plurality of exchanges 20 are connected to the telephone network 11, and each of the exchanges 20 accommodates a plurality of telephones 13.

  Each exchange 20 stores the telephone numbers of all telephones 13 accommodated in its own exchange 20, and receives an incoming call that is a destination telephone number from any telephone 13 accommodated in its own exchange 20. When a call signal including information indicating the destination number is received, the incoming call number and the caller number that is the telephone number of the telephone set 13 that has transmitted the call signal and that is the telephone number of the caller telephone set 13 are Generate an incoming request containing

  Then, the exchange 20 transmits the generated incoming call request to the exchange 20 in which the telephone set 13 corresponding to the incoming call destination number included in the incoming call request is accommodated via the telephone network 11, so that the own exchange 20 and The telephone communication between the caller telephone set 13 and the callee telephone set 13 is realized via the destination exchange 20.

  In addition, the exchange 20 in which the telephone 13 of the call originator is accommodated, when the call between the telephones 13 is terminated, the charge information indicating information necessary for calculating the call charge (for example, the contractor to be charged) The telephone number, the call time, the call time zone, the distance from the exchange 20 in which the caller telephone 13 is accommodated to the exchange 20 in which the callee telephone 13 is accommodated, etc. are charged via the telephone network 11. Send to device 12. The billing processing device 12 calculates a call charge from the charge information received from the exchange 20, and performs a process of charging the calculated call charge to the contractor of the telephone number to be charged included in the charge information.

  FIG. 2 is a block diagram illustrating a functional configuration of the exchange 20 according to the first embodiment. The exchange 20 according to the present embodiment includes a call processing unit 21, a transfer processing unit 22, a transfer permission confirmation unit 23, a charge information transmission unit 24, a transfer information storage unit 25, and a charge information storage unit 26.

  In the charge information storage unit 26, for example, as shown in FIG. 4, the call time 261 of the call, the call source number of the call, and the charge number 260, which is the telephone number of the user to be charged for the call charge, A caller exchange ID 262 that is identification information of the exchange 20 in which the telephone set 13 of the call is accommodated, and a call destination exchange ID 263 that is identification information of the exchange 20 in which the caller destination telephone 13 is accommodated. Stored. In addition to the information shown in FIG. 4, the charge information storage unit 26 may store a call time zone, distance information from the call time 261 to the caller exchange ID 262, and the like.

  The call processing unit 21 provides information necessary for call control, call establishment, call disconnection, and call charge calculation for each telephone set 13 accommodated in the local exchange 20 in accordance with a telephone call control protocol. Processing for registration in the charge information storage unit 26 is performed.

  When the call processing unit 21 receives an incoming request with the telephone number of one of the telephones 13 accommodated in the local exchange 20 as the destination number via the telephone network 11, the call processing unit 21 receives the received incoming request. The data is sent to the transfer processing unit 22. When a normal incoming call is instructed from the transfer processing unit 22, the call processing unit 21 causes the telephone set 13 corresponding to the incoming call destination number included in the incoming call request to receive a call.

  When the transfer processing unit 22 instructs the transfer destination number, which is the telephone number of the incoming call transfer destination, the call processing unit 21 rewrites the incoming call destination number included in the incoming call request with the transfer destination number. Then, the call processing unit 21 transfers the rewritten incoming call request to the exchange 20 in which the telephone set 13 corresponding to the incoming call destination number included in the incoming call request is accommodated.

  The call processing unit 21 starts measuring the call time when the destination telephone 13 starts a call in response to the incoming call request. When the call ends, the call processing unit 21 Stored in the charge information storage unit 26 in association with the telephone number of the caller telephone set 13, the identification information of the exchange 20 in which the telephone set 13 is accommodated, and the identification information of the exchange 20 in which the telephone set 13 is accommodated. To do.

  It should be noted that the call processing unit 21 in the exchange 20 in which the caller telephone set 13 is accommodated, even if the incoming call request is transferred by the exchange 20 in which the callee telephone set 13 is accommodated. The call time to the exchange 20 in which the destination telephone 13 is accommodated is measured, and the measured call time is used as the telephone number of the caller telephone 13, the identification information of the own exchange 20, and the destination. The charge information is stored in the charge information storage unit 26 in association with the identification information of the exchange 20 in which the telephone 13 is accommodated.

  In addition, when the call processing unit 21 in the exchange 20 in which the destination telephone 13 is accommodated transfers the incoming request, the call processing unit 21 from the local exchange 20 to the exchange 20 in which the destination telephone 13 is accommodated. The call time is measured, and the measured call time is associated with the telephone number of the caller telephone set 13, the identification information of the local exchange 20, and the identification information of the exchange 20 in which the transfer destination telephone 13 is accommodated. The information is stored in the information storage unit 26.

  In the transfer information storage unit 25, for example, as shown in FIG. 3, the incoming call forwarding destination when the incoming call destination number 250 receives an incoming call in association with the incoming call destination number 250 indicating the incoming call destination telephone number. A transfer destination number 251 indicating the telephone number of the incoming call and a caller number 252 indicating the telephone number of the caller of the incoming call to be transferred are stored.

  In addition to designating a specific telephone number, the telephone number in the caller number 252 can be designated by information such as “*” or “number notified”. When “*” is set in the transmission source number 252, it indicates that all incoming calls to the destination telephone number are transferred to the corresponding transfer destination number. In addition, when “with number notification” is set in the transmission source number 252, only the incoming call for which the transmission of the transmission source number is permitted among all incoming calls to the reception destination telephone number is supported. To be transferred to.

  The transfer information storage unit 25 is provided with a flag for each record, and the contents set in the corresponding record are valid when the flag is turned on, and set in the corresponding record when the flag is turned off. It is also possible to invalidate the contents that have been made. Thereby, when it is desired to temporarily invalidate the setting contents, it is possible to save the trouble of registering the record again.

  When the transfer processing unit 22 receives an incoming request from the call processing unit 21, the destination number included in the incoming request is registered as a destination number in the transfer information storage unit 25, and the incoming call request is received. It is determined whether or not the source number included in the request is registered in the transfer information storage unit 25 in association with the destination number as an incoming call source number to be transferred.

  The destination number included in the incoming request is not registered as the destination number in the transfer information storage unit 25, or the source number included in the incoming request is the source number of the incoming call to be transferred If the call information is not registered in the transfer information storage unit 25 in association with the destination number, the transfer processing unit 22 instructs the call processing unit 21 to make a normal incoming call with respect to the incoming call request.

  The destination number included in the incoming request is registered as the destination number in the transfer information storage unit 25, and the source number included in the incoming request is the source number of the incoming call to be transferred. When the call information is registered in the transfer information storage unit 25 in association with the destination number, the transfer processing unit 22 confirms whether or not the user of the caller telephone set 13 permits transfer of the call. Check with the unit 23.

  When the user of the calling telephone 13 is notified from the transfer permission confirmation unit 23 that the transfer of incoming calls is not permitted, the transfer processing unit 22 instructs the call processing unit 21 to respond to the received incoming request. Disconnect the incoming call.

  When the user of the caller telephone 13 is notified from the transfer permission confirmation unit 23 that the transfer of the incoming call is permitted, the transfer processing unit 22 notifies the call processing unit 21 of the telephone number of the transfer destination of the incoming call. Thus, the call processing unit 21 is instructed to transfer the incoming call.

  The transfer permission confirmation unit 23, when instructed by the transfer processing unit 22 to confirm whether or not the user of the caller telephone set 13 permits transfer of incoming calls, via the telephone network 11, the caller. A transfer confirmation request is transmitted to the telephone 13 of the telephone. The transfer confirmation request is, for example, that the incoming call is transferred to a telephone set 13 different from the telephone number 13 of the destination number, that the call charge from the transfer source to the transfer destination is charged to the call source, and the transfer is permitted. This is a voice guidance for explaining the predetermined button operation and the predetermined button operation when transfer is refused.

  The transfer permission confirmation unit 23 receives a transfer confirmation response indicating whether or not the user of the caller telephone set 13 permits the transfer of the incoming call from the caller telephone set 13 via the telephone network 11, and sends the call. The user of the original telephone 13 notifies the transfer processing unit 22 whether or not to permit transfer of incoming calls. The transfer confirmation response is, for example, a tone signal indicating either a button operation that permits transfer or a button operation that rejects transfer.

  The fee information transmission unit 24 transmits the fee stored in the fee information storage unit 26 to the charging processing apparatus 12 via the telephone network 11.

  FIG. 5 is a flowchart illustrating the operation of the exchange 20 in the first embodiment. For example, at a predetermined timing such as when the power is turned on, the exchange 20 according to the present embodiment starts the operation illustrated in the flowchart. In this flowchart, operations specific to the present invention are shown, and processing similar to that of a conventional exchange is omitted.

  First, the call processing unit 21 determines whether or not an incoming request for receiving the telephone set 13 accommodated in the local exchange 20 is received from another exchange 20 via the telephone network 11 (S100). When the incoming request for the telephone 13 accommodated in the local exchange 20 is not received (S100: No), the call processing unit 21 repeats Step S100 until the incoming request is received.

  When receiving an incoming call request with the telephone 13 accommodated in the local exchange 20 as the destination (S100: Yes), the call processing unit 21 sends the received incoming request to the transfer processing unit 22. The transfer processing unit 22 determines whether or not the destination number included in the incoming request received from the call processing unit 21 is registered as the destination number in the transfer information storage unit 25 (S101).

  When the destination number included in the incoming call request is not registered as the destination number in the transfer information storage unit 25 (S101: No), the transfer processing unit 22 performs call processing to cause a normal incoming call regarding the incoming call request. The unit 21 is instructed. The call processing unit 21 performs a normal incoming call process for making a call to the telephone set 13 corresponding to the destination telephone number included in the incoming call request (S103), and executes the process shown in step S100 again.

  When the destination number included in the incoming request is registered as the destination number in the transfer information storage unit 25 (S101: Yes), the transfer processing unit 22 transfers the source number included in the incoming request. It is determined whether or not the incoming call source number to be registered is registered in the transfer information storage unit 25 in association with the destination number (S102).

  When the transmission source number included in the incoming call request is not registered in the transfer information storage unit 25 in association with the destination number as the incoming call source number to be transferred (S102: No), the transfer processing unit In response to the incoming request, 22 instructs the call processing unit 21 to make a normal incoming call, and the call processing unit 21 executes the process shown in step S103.

  When the source number included in the incoming call request is registered in the transfer information storage unit 25 as the incoming call source number to be transferred in association with the destination number (S102: Yes), the transfer processing unit 22 instructs the transfer permission confirmation unit 23 to confirm whether or not the user of the caller telephone set 13 permits the transfer of the incoming call. The transfer permission confirmation unit 23 transmits a transfer confirmation request for confirming whether the user of the caller telephone set 13 permits the transfer of incoming calls to the caller telephone set 13 (S104).

  Next, the transfer permission confirmation unit 23 determines whether or not the user of the caller telephone set 13 has received a transfer confirmation response indicating that the incoming call transfer is permitted (S105). When the user of the caller telephone set 13 receives a transfer confirmation response indicating that transfer of incoming calls is not permitted (S105: No), the transfer permission confirmation unit 23 notifies the transfer processing unit 22 accordingly. The transfer processing unit 22 instructs the call processing unit 21 to disconnect the incoming call corresponding to the received incoming call request (S106), and the call processing unit 21 executes the process shown in step S100 again.

  When the user of the caller telephone 13 receives a transfer confirmation response indicating that transfer of incoming calls is permitted (S105: Yes), the transfer permission confirmation unit 23 notifies the transfer processing unit 22 accordingly. The transfer processing unit 22 notifies the call processing unit 21 of the telephone number of the transfer destination of the incoming call, thereby transferring the incoming call to the call processing unit 21 (S107). Then, a call is started between the caller telephone set 13 and the incoming call transfer telephone set 13 via the call processing unit 21 (S108), and the call processing unit 21 starts measuring the call time.

  And when the said telephone call is complete | finished (S109: Yes), the call process part 21 uses the telephone number of the telephone 13 of a transmission origin, the identification information of the exchange 20 in which the said telephone 13 is accommodated, and the measured call time, and The transfer information is stored in the charge information storage unit 26 in association with the identification information of the exchange 20 in which the telephone set 13 is accommodated (S110).

  Then, the fee information transmission unit 24 transmits the fee information stored in the fee information storage unit 26 to the charging processing device 12 via the telephone network 11 (S111), and the call processing unit 21 returns to step S100 again. Perform the indicated process.

  FIG. 6 is a sequence diagram illustrating the operation of the telephone system 10 in the first embodiment.

  First, the caller telephone 13A makes a call by transmitting information indicating the called number to the exchange 20A in which the telephone 13A is accommodated (S200). The exchange 20A stores in advance the telephone number of each telephone set 13 accommodated in the local exchange 20, and accepts the telephone number of the telephone set 13A that made the call from the transmission source number and the telephone set 13A. An incoming request including the called number is generated.

  Then, the exchange 20A transmits the incoming call request to the exchange 20 (the exchange 20B in this example) in which the telephone 13 having the destination number included in the generated incoming call request is accommodated (S201). In the exchange 20B, the incoming call destination number included in the received incoming call request is registered in the transfer information storage unit 25, and the caller source number included in the received incoming call request is the telephone of the incoming caller to be transferred. A transfer confirmation request for detecting whether or not the user of the caller telephone set 13 permits the transfer of the incoming call is detected by detecting that it is registered in the transfer information storage unit 25 as a number. (S202).

  The user of the caller telephone set 13A performs an operation indicating that the incoming call transfer is permitted, and the telephone set 13A transmits a transfer confirmation response indicating that the incoming call transfer is permitted to the exchange 20B (S203). The exchange 20B rewrites the destination telephone number of the incoming request to the forwarding destination telephone number, and transfers the rewritten incoming request to the exchange 20C in which the incoming destination telephone set 13 (the telephone set 13C in this example) is accommodated. (S204).

  The exchange 20C detects that the incoming call destination number included in the received incoming call request is not registered in the transfer information storage unit 25, and makes a normal incoming call to the telephone set 13C (S205). The telephone 13C responds to the incoming call, and the telephone 13A and the telephone 13C start a call via the exchange 20A, the exchange 20B, and the exchange 20C (S206).

  When the telephone call between the telephone 13A and the telephone 13C is finished (S207 to S209), the exchange 20A obtains information necessary for calculating a call charge from the exchange 20A to the exchange B (the telephone number of the telephone 13A, the call time, the exchange 20A The charge information including the identification information and the identification information of the exchange B) is created (S210), and the exchange 20B obtains information necessary for calculating the call charge from the exchange 20B to the exchange C (the telephone number of the telephone 13A, the call time, The identification information of the exchange 20B and the identification information of the exchange C) are created (S211).

  Then, the exchange 20A transmits the created fee information to the accounting processor 12 (S212), and the exchange 20B transmits the created fee information to the accounting processor 12 (S213). The billing processing device 12 calculates a call charge based on the charge information received from the exchange 20A and the exchange 20B, and charges the calculated call charge to the subscriber with the charge number included in the charge information (S214).

  The first embodiment of the present invention has been described above.

  As is apparent from the above description, according to the exchange 20 of the present embodiment, the call charge from the transfer source to the transfer destination can be charged to the caller in the call transfer service.

  Next, a second embodiment of the present invention will be described.

  FIG. 7 is a block diagram illustrating a functional configuration of the exchange 20 according to the second embodiment. The exchange 20 of the present embodiment includes a call processing unit 21, a transfer permission confirmation unit 23, a transfer information storage unit 25, an incoming request change unit 27, and a transfer destination notification unit 28. Except for the points described below, in FIG. 7, the components denoted by the same reference numerals as those in FIG. 2 have the same or similar functions as those in FIG.

  When the call processing unit 21 receives an incoming request for any of the telephones 13 accommodated in the local exchange 20 via the telephone network 11, the call processing unit 21 sends the received incoming request to the transfer destination notification unit 28. When a normal incoming call is instructed from the transfer destination notifying unit 28, the call processing unit 21 makes the incoming call to the telephone set 13 corresponding to the destination telephone number included in the received incoming call request.

  Further, when the transfer destination notification unit 28 instructs to cancel the incoming call request, the call processing unit 21 discards the received incoming call request. When the call processing unit 21 receives an incoming request from the incoming request change unit 27, the call processing unit 21 transmits the incoming request to the destination included in the received incoming request.

  When receiving the incoming request from the call processing unit 21, the transfer destination notifying unit 28 registers the destination number included in the incoming request as the destination number in the transfer information storage unit 25, and It is determined whether or not the caller source number included in the incoming call request is registered in the transfer information storage unit 25 in association with the callee destination number as the caller source number of the incoming call to be transferred.

  The destination number included in the incoming request is not registered as the destination number in the transfer information storage unit 25, or the source number included in the incoming request is the source number of the incoming call to be transferred If the call destination number is not registered in the transfer information storage unit 25 in association with the call destination number, the transfer destination notification unit 28 instructs the call processing unit 21 to make a normal call with respect to the call reception request.

  The destination number included in the incoming request is registered as the destination number in the transfer information storage unit 25, and the source number included in the incoming request is the source number of the incoming call to be transferred. When the destination information is registered in the transfer information storage unit 25 in association with the destination number, the transfer destination notification unit 28 determines whether or not the user of the caller telephone set 13 permits the transfer of the incoming call. The confirmation unit 23 is confirmed.

  When the user of the calling telephone 13 is notified from the transfer permission confirmation unit 23 that the transfer of the incoming call is not permitted, the transfer destination notification unit 28 instructs the call processing unit 21 to respond to the received incoming request. Disconnect incoming calls.

  When the user of the caller telephone set 13 is notified from the transfer permission confirmation unit 23 that the transfer of the incoming call is permitted, the transfer destination notification unit 28 instructs the call processing unit 21 to discard the incoming call request, and A transfer request including the transfer destination number corresponding to the call destination number included in the call reception request and the caller source number included in the call reception request is returned to the exchange 20 that is the transmission source of the call reception request.

  When the incoming request change unit 27 receives a transfer request from another exchange 20, the incoming request change unit 27 uses the source number and the transfer destination number included in the received transfer request as the source number and the destination number, respectively. The request is recreated, and the recreated incoming request is transmitted to the exchange 20 in which the telephone 13 having the destination number included in the incoming request is accommodated.

  FIG. 8 is a flowchart illustrating the operation of the exchange 20 in the second embodiment. For example, at a predetermined timing such as when the power is turned on, the exchange 20 according to the present embodiment starts the operation illustrated in the flowchart. Also in this flowchart, only the operation peculiar to the present invention is shown, and the same processing as that of the conventional exchange is omitted.

  First, the call processing unit 21 determines whether or not an incoming request for receiving the telephone set 13 accommodated in the local exchange 20 is received from another exchange 20 via the telephone network 11 (S300). When an incoming request is received with the telephone set 13 accommodated in the local exchange 20 as the destination (S300: Yes), the call processing unit 21 sends the received incoming request to the transfer destination notification unit 28. The transfer destination notification unit 28 determines whether or not the destination number included in the incoming request received from the call processing unit 21 is registered as the destination number in the transfer information storage unit 25 (S301).

  When the destination number included in the incoming call request is not registered as the destination number in the transfer information storage unit 25 (S301: No), the transfer destination notification unit 28 calls to make a normal incoming call with respect to the incoming call request. The processing unit 21 is instructed. The call processing unit 21 executes a normal incoming call process for making an incoming call to the telephone set 13 corresponding to the destination telephone number included in the incoming call request (S303), and again executes the process shown in step S300.

  When the destination number included in the incoming request is registered as the destination number in the transfer information storage unit 25 (S301: Yes), the transfer destination notifying unit 28 indicates that the source number included in the incoming request is transferred. It is determined whether or not the incoming call source number to be made is registered in the transfer information storage unit 25 in association with the destination number (S302).

  When the caller source number included in the incoming call request is not registered in the transfer information storage unit 25 as the incoming caller source number to be transferred and associated with the callee number (S302: No) The unit 28 instructs the call processing unit 21 to make a normal incoming call with respect to the incoming call request, and the call processing unit 21 executes the process shown in step S303.

  When the source number included in the incoming request is registered in the transfer information storage unit 25 as the incoming source number to be transferred and associated with the destination number (S302: Yes), the transfer destination notification The unit 28 instructs the transfer permission confirmation unit 23 to confirm whether or not the user of the caller telephone set 13 permits the transfer of the incoming call. The transfer permission confirmation unit 23 transmits a transfer confirmation request for confirming whether or not the user of the caller telephone set 13 permits the transfer of incoming calls to the caller telephone set 13 (S304).

  Next, the transfer permission confirmation unit 23 determines whether or not the user of the caller telephone set 13 has received a transfer confirmation response indicating that the incoming call transfer is permitted (S305). When the user of the calling telephone 13 receives a transfer confirmation response indicating that the incoming call transfer is not permitted (S305: No), the transfer permission confirmation unit 23 notifies the transfer destination notification unit 28 to that effect. The transfer destination notification unit 28 instructs the call processing unit 21 to disconnect the incoming call corresponding to the received incoming call request (S306), and the call processing unit 21 executes the process shown in step S300 again.

  When the user of the caller telephone set 13 receives a transfer confirmation response indicating that transfer of incoming calls is permitted (S305: Yes), the transfer permission confirmation unit 23 notifies the transfer destination notification unit 28 to that effect. The transfer destination notification unit 28 instructs the call processing unit 21 to discard the incoming request, and the call processing unit 21 discards the incoming request (S307).

  Next, the transfer destination notification unit 28 sends a transfer request including the transfer destination number corresponding to the call destination number included in the call reception request and the caller source number included in the call reception request to the call reception request. A reply is made to the source exchange 20 (S308), and the call processing unit 21 executes the process shown in step S300 again.

  In step S300, when an incoming request for receiving the telephone set 13 accommodated in the local exchange 20 has not been received (S300: No), the incoming request change unit 27 has received a transfer request from another exchange 20. It is determined whether or not (S309). When a transfer request has not been received from another exchange 20 (S309: No), the call processing unit 21 executes the process shown in step S300 again.

  When a transfer request is received from another exchange 20 (S309: Yes), the incoming request change unit 27 sets the source number and the destination number included in the received transfer request to the source number and the destination, respectively. The incoming call request with the number is recreated, and the recreated incoming call request is transmitted to the exchange 20 in which the telephone 13 having the called number included in the incoming call request is accommodated (S310), and again shown in step S300. Execute the process.

  FIG. 9 is a sequence diagram illustrating the operation of the telephone system 10 in the second embodiment. Except for the points described below, in FIG. 9, the processes denoted by the same reference numerals as those in FIG. 6 are the same as or similar to the processes in FIG.

  When receiving the transfer confirmation response indicating that the transfer of the incoming call is permitted from the telephone set 13A, the exchange 20B receives the transfer destination number corresponding to the destination number included in the incoming call request received from the exchange 20A in step S201, and Then, a transfer request including the caller source number included in the incoming call request is returned to the exchange 20 that is the transmission source of the incoming call request (S220).

  The exchange 20A recreates an incoming call request with the caller number and the callee number included in the received transfer request as the caller number and the callee number, respectively (S221). The telephone number 13 included in the incoming call request is transmitted to the exchange 20 in which the telephone set 13 is accommodated (S222). The exchange 20C detects that the incoming call destination number included in the received incoming call request is not registered in the transfer information storage unit 25, and makes a normal incoming call to the telephone set 13C (S205). Hereinafter, the telephone system 10 performs a normal incoming call operation.

  The second embodiment of the present invention has been described above.

  As is apparent from the above description, according to the exchange 20 of the present embodiment, the call charge from the transfer source to the transfer destination can be charged to the caller in the call transfer service. In addition, when the incoming call is transferred, the exchange 20 according to the present embodiment does not relay the call due to the incoming call. Therefore, the overall call charge in the incoming call transfer service can be further reduced.

  Note that the exchange 20 in the first or second embodiment is realized by a computer 30 having a configuration as shown in FIG. 10, for example. As shown in FIG. 10, the computer 30 includes a CPU (Central Processing Unit) 31, a RAM (Random Access Memory) 32, a ROM (Read Only Memory) 33, an HDD (Hard Disk Drive) 34, and a communication interface (I / F). 35, an input / output interface (I / F) 36, and a media interface (I / F) 37.

  The CPU 31 operates based on a program stored in the ROM 33 or the HDD 34 and controls each part. The ROM 33 stores a boot program executed by the CPU 31 when the computer 30 is started up, a program depending on the hardware of the computer 30, and the like.

  The HDD 34 stores a program executed by the CPU 31. The communication interface 35 receives data from other devices via the telephone network 11 or other communication lines and sends the data to the CPU 31, and transmits the data generated by the CPU 31 to other data via the telephone network 11 or other communication lines. Send to device.

  The CPU 31 controls the input / output device via the input / output interface 36. The CPU 31 acquires data from the input / output device via the input / output interface 36. Further, the CPU 31 outputs the generated data to the input / output device via the input / output interface 36.

  The media interface 37 reads a program or data stored in the recording medium 38 and provides it to the RAM 32. A program provided to the CPU 31 via the RAM 32 is stored in the recording medium 38. The program is read from the recording medium 38, installed in the computer 30 via the RAM 32, and executed by the CPU 31. The recording medium 38 is, for example, an optical recording medium such as a DVD (Digital Versatile Disk) or PD (Phase change rewritable disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory. Etc.

  In the first embodiment, a program that is installed and executed in the computer 30 includes the computer 30, the call processing unit 21, the transfer processing unit 22, the transfer permission confirmation unit 23, the charge information transmission unit 24, and the transfer information storage unit 25. , And the charge information storage unit 26.

  In the second embodiment, a program installed and executed in the computer 30 includes the computer 30, the call processing unit 21, the transfer permission confirmation unit 23, the transfer information storage unit 25, the incoming request change unit 27, and the transfer. It functions as the destination notification unit 28.

  The computer 30 reads these programs from the recording medium 38 and executes them, but as another example, these programs may be acquired from other devices via a communication medium. The communication medium refers to a communication line or a digital signal or a carrier wave that propagates through the communication line.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 is a system configuration diagram showing a configuration of a telephone system 10 according to an embodiment of the present invention. 2 is a block diagram illustrating a functional configuration of an exchange 20 in the first embodiment. FIG. 4 is a diagram illustrating an example of a data structure stored in a transfer information storage unit 25. FIG. It is a figure which shows an example of the data structure stored in the charge information storage part. It is a flowchart which illustrates operation | movement of the switching device 20 in 1st Embodiment. It is a sequence diagram which illustrates operation | movement of the telephone system 10 in 1st Embodiment. It is a block diagram which illustrates functional composition of exchange 20 in a 2nd embodiment. It is a flowchart which illustrates operation | movement of the switching device 20 in 2nd Embodiment. It is a sequence diagram which illustrates operation | movement of the telephone system 10 in 2nd Embodiment. It is a figure which illustrates the hardware constitutions of the computer 30 which implement | achieves the function of the switching device 20 in 1st or 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Telephone system, 11 ... Telephone network, 12 ... Charge processing apparatus, 13 ... Telephone, 20 ... Switch, 21 ... Call processing part, 22 ... Transfer processing part, 23 ... Transfer permission confirmation unit, 24 ... Charge information transmission unit, 25 ... Transfer information storage unit, 250 ... Destination number, 251 ... Transfer destination number, 252 ... Source number , 26 ... charge information storage unit, 260 ... billing number, 261 ... call time, 262 ... source exchange ID, 263 ... destination exchange ID, 27 ... incoming request change part , 28 ... Transfer destination notification unit, 30 ... Computer, 31 ... CPU, 32 ... RAM, 33 ... ROM, 34 ... HDD, 35 ... Communication interface, 36. -I / O interface, 37 ... Media interface, 8 ... recording medium

Claims (6)

In a telephone system having a plurality of exchanges, when an incoming call is received at a destination number that is a preset destination destination telephone number, a forwarding destination telephone number that is preset in association with the destination number A call forwarding method for forwarding the incoming call to a forwarding number,
Each switch is
Transfer information storage means for storing the transfer destination number in association with the destination number;
Charge information storage means for storing charge information, which is information necessary for calculating a call charge, in association with a telephone number of a user who charges the call charge;
The exchange that houses the caller's phone
When the destination number is received from the source telephone, the incoming request including the source number that is the destination number and the telephone number of the source telephone is sent to the telephone with the destination number included in the incoming request. Is sent to the exchange in which it is housed,
The exchange that accommodates the destination telephone is
When an incoming request is received, if the destination number included in the incoming request is stored in the transfer information storage means in the local exchange, the transfer information storage means is associated with the destination number. The incoming call is forwarded to the exchange accommodating the telephone corresponding to the forwarding number stored in
The exchange that accommodates the originating telephone and the exchange that accommodates the destination telephone,
When the call through the local exchange is terminated, the charge information necessary for calculating the charge for the call is stored in the charge information storage means in the local exchange in association with the telephone number of the telephone that is the source of the call. An incoming call transfer method characterized in that the charge information in the charge information storage means is transmitted together with the telephone number of the caller telephone set associated with the charge information storage means to a charge processing device for performing charge processing of the call charge. The call transfer method according to claim 1,
The exchange that accommodates the destination telephone is
When an incoming call request is received, if the incoming call destination number included in the incoming call request is stored in the transfer information storage means in the local exchange, the telephone corresponding to the caller number included in the incoming call request is sent to When a transfer confirmation request is transmitted asking whether or not to permit the transfer of the incoming call, and when a transfer confirmation response indicating that the transfer of the incoming call is permitted is received from the telephone, the transfer of the incoming call is executed. Call transfer method characterized. The call transfer method according to claim 2,
The transfer information storage means of each exchange further stores the caller number in association with the called number,
The exchange that accommodates the destination telephone is
When an incoming call request is received, the incoming call destination number included in the incoming call request is stored in the forwarding information storage means in the local exchange, and the caller number included in the incoming call request is the incoming call number. An incoming call characterized by transmitting the transfer confirmation request to a telephone corresponding to the caller number included in the incoming call request if it is stored in transfer information storage means in the local exchange in association with the destination number. Transfer method. In a telephone system having a plurality of exchanges, when an incoming call is received at a destination number that is a preset destination destination telephone number, a forwarding destination telephone number that is preset in association with the destination number A call forwarding method for forwarding the incoming call to a forwarding number,
Each switch is
Transfer information storage means for storing the transfer destination number in association with the destination number;
The exchange that houses the caller's phone
When the destination number is received from the source telephone, the incoming request including the source number that is the destination number and the telephone number of the source telephone is sent to the telephone with the destination number included in the incoming request. Is sent to the exchange in which it is housed,
The exchange that accommodates the destination telephone is
When an incoming request is received, if the destination number included in the incoming request is stored in the transfer information storage means in the local exchange, the transfer information storage means is associated with the destination number. A transfer request including the transfer destination number stored in and the caller number included in the received incoming call request is sent to the exchange accommodating the caller's telephone,
The exchange that houses the caller's phone
When a transfer request is received from another exchange, an incoming request with the source number and transfer destination number included in the transfer request as the source number and destination number is recreated and recreated. An incoming call transfer method, comprising: transmitting an incoming call request to an exchange accommodating a telephone having a destination number included in the incoming call request. The call transfer method according to claim 4, wherein
When an incoming call request is received, if the incoming call destination number included in the incoming call request is stored in the transfer information storage means in the local exchange, the telephone corresponding to the caller number included in the incoming call request is sent to A transfer confirmation request for determining whether or not to permit transfer of the incoming call is transmitted, and the transfer request is generated when a transfer confirmation response indicating that the transfer of the incoming call is permitted is received from the telephone. Call forwarding method. The call transfer method according to claim 5,
The transfer information storage means of each exchange further stores the caller number in association with the called number,
The exchange that accommodates the destination telephone is
When an incoming call request is received, the incoming call destination number included in the incoming call request is stored in the forwarding information storage means in the local exchange, and the caller number included in the incoming call request is the incoming call number. An incoming call characterized by transmitting the transfer confirmation request to a telephone corresponding to the caller number included in the incoming call request if it is stored in transfer information storage means in the local exchange in association with the destination number. Transfer method.

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